Everytime I sit down to work out lyrics from a CD, there always seems to be one or two lines that I can't quite make out. Do you know of any sites with loads of blues lyrics? I've down a couple of searchs, but havn't been able to find any sites that I would consider gems.

There are quite a good number of lyrics transcribed at:
http://blueslyrics.tripod.com/I can't vouch for the accuracy, and the tabs the site claims to have appear to exist only in the mind of the website's writer, but I've found it pretty handy for lyrics.
The site is prone to bandwidth problems, and sometimes gets shut down by the host, but it's worth a look.

>Everytime I sit down to work out lyrics from a CD, there
>always seems to be one or two lines that I can't quite make
>out. Do you know of any sites with loads of blues lyrics?
>I've down a couple of searchs, but havn't been able to find
>any sites that I would consider gems.

Just keep in mind when you visit those sites listed that the people who trancribed the lyrics are not necessarily any better than you are at deciphering unclear, low-volume, dialectic, or out-dated slang.
I've seen some pretty shoddy transcriptions out there. Like there was a song on the "Kings of the 12 String Guitar" LP that went "I ain't no lamp, but my wick is burning low. Come and trim my wick before it refuse to glow" Yhe online transcription had for the final 4 words "so it wil fuse the glow".